Northline long handle rigid 4.0 inch female National Hose (NH/NST) to rigid 6.0 inch male National Hose (NH/NST) adapter.

Northline adapters are extruded hardcoated 6061-T6 aluminum alloy. The finished product is laser engraved for clear understanding of the thread type and size produced.

National Hose (NH) or National Standard Thread (NST) is often referred to as “fire hose thread” as this is by far the most common thread in use today by fire departments. NPSH and NPT are more common in industrial applications.